@misc{cryptoeprint:2006:424,
    author = {Prateek Gupta and Vitaly Shmatikov},
    title = {Security Analysis of Voice-over-IP Protocols},
    howpublished = {Cryptology ePrint Archive, Report 2006/424},
    year = {2006},
    url = {http://eprint.iacr.org/2006/424},
}